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Oracle9i program with pl/sql Sample Questions:

1. You are about to change the arguments of the CALC_TEAM_AVG function.
Which dictionary view can you query to determine the names of the procedures and functions that
invoke the CALC_TEAM_AVG function?

A) USER_DEPENDENCIES
B) USER_REFERENCES
C) USER_SOURCE
D) USER_PROC_DEPENDS

2. Which command must you issue to allow users to access the UPD_TEAM_STAT trigger on the TEAM table?

A) GRANT EXECUTE ON TEAM TO PUBLIC
B) GRANT SELECT,INSERT,UPDATE,DELETE ON TEAM TO PUBLIC;
C) GRANT SELECT,INSERT,UPDATE,DELETE ON UPD_TEAM_STAT TO PUBLIC;
D) GRANT SELECT, EXECUTE ON TEAM, UPD_TEAM_STAT TO PUBLIC;

3. Examine this code:
CREATE OR REPLACE PROCEDURE audit_emp
(p_id IN emp_empno%TYPE)
IS
v_id NUMBER;
PROCEDURE log_exec
IS
BEGIN
INSERT INTO log_table (user_id, log_delete)
VALUES (USER, SYSDATE);
END log_exec;
v_name VARCHAR2(20);
BEGIN
DELETE FROM emp
WHERE empno = p_id;
log_exec;
SELECT ename, empno
INTO v_name, v_id
FROM emp
WHERE empno = p_id;
END audit_emp;
Why does this code cause an error when compiled?

A) Variable v_name should be declared before declaring the LOG_EXEC procedure.
B) The LOG_EXEC procedure should be invoked as EXECUTE log_exec with the AUDIT_EMP procedure.
C) An insert statement is not allowed in a subprogram declaration.
D) Procedure LOG_EXEC should be declared before any identifiers.

4. Why do you use an INSTEAD OF trigger?

A) To modify data in which the DML statement has been issued against an inherently nonupdateable view.
B) To insert data into a view that normally does not accept inserts.
C) To perform clean up actions when ending a user session.
D) To insert into an audit table when data is updated in a sensitive column.

5. Examine this code
CREATE OR REPLACE PROCEDURE load bfile (p_flle_loc IN VARCHAR2)
IS
V_file BFILE;
V_filename VARCHAR2 (16);
CURSOR emp_cursor IS
SELECT employee_id
FROM employees
WHERE Job_id = 'IT_PROG'
FOR UPDATE;
BEGIN
FOR emp_record IN emp_cursor LOOP
V_filename:= emp_record.employee_id || '.GIF';
V_file := BFILENAME(p_flle_loc, v_filename);
END LOOP;
END;
/
What does the BFILENAME function do?

A) It reads data from an external BFILE
B) It returns a BFILE locator that is associated with a physical LOB binary file on the server's file system
C) It checks for the existence of an external BFILE
D) It creates a directory object for use with the external BFILEs

Solutions: